package cn.lnl.springcloud.service;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author LNL
 * @date 2021/8/22 17:27
 */
@Service
public class PaymentService {

    /**
     * 正常访问：ok的方法
     * @param id
     * @return
     */
    public String paymentInfo_Ok (Integer id) {
        return "线程池："  + Thread.currentThread().getName() + " paymentInfo_Ok, id : " + id;
    }

    /**
     * 正常访问：ok的方法
     * @param id
     * @return
     */
    @HystrixCommand(fallbackMethod = "paymentInfo_timeOutHandler", commandProperties = {
            //表示当前这个线程的峰值为3秒钟，如果超过的3秒就会出错，就会进入到handler方法中
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds",value = "3000")
    })
    public String paymentInfo_timeOut (Integer id) {
        int time = 2;
//        int age = 10/0;
        try {
            TimeUnit.SECONDS.sleep(time);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        return "线程池："  + Thread.currentThread().getName() + " paymentInfo_timeOut, id : " + id + " 耗时"+time+"秒钟";
    }

    public String paymentInfo_timeOutHandler (Integer id) {
        return "线程池："  + Thread.currentThread().getName() + " 系统繁忙请稍后再试, id : " + id + " o(╥﹏╥)o";
    }


    //=====服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback", commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled", value = "true"),//是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold", value = "10"),//请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds", value = "10000"),//时间窗口期
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage", value = "60"),//失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker( Integer id) {
        if (id < 0) {
            throw new RuntimeException("******id 不能为负数");
        }

        String serialNumber = IdUtil.simpleUUID();
        return Thread.currentThread().getName() + "\t" + "调用成功，流水号" + serialNumber;
    }

    public String paymentCircuitBreaker_fallback ( Integer id) {
        return "id 不能为负数，请稍后重试，o(╥﹏╥)o  id：" + id;
    }


}
